Toothed charger belt tension

[G40Nik]

Hi all just fitting a replacement toothed belt on the supercharger on my G40 how tight should the belt be it is a 1000 HTH belt.

[hayesey]

I always just used the same rule as doing a cambelt, tight enough so that you can twist it 90degrees with your thumb & finger on it's longest free section and no more without straining.

[G40Nik]

Ok cheers i think i can just about get 90 degrees on long part but might be a little tight as can hear a noise like a chuff when a belt is tight and makes that type of noise.